LTTIX vs. SSFNX
LTTIX (MFS Lifetime 2025 Fund) and SSFNX (State Street Target Retirement Fund) are both Target Retirement Date funds. Over the past 10 years, LTTIX returned 6.24%/yr vs 5.92%/yr for SSFNX. Their correlation of 0.94 suggests significant overlap in exposure. LTTIX charges 0.00%/yr vs 0.10%/yr for SSFNX.
Performance
LTTIX vs. SSFNX - Performance Comparison
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Returns By Period
In the year-to-date period, LTTIX achieves a 2.74% return, which is significantly lower than SSFNX's 5.04% return. Over the past 10 years, LTTIX has outperformed SSFNX with an annualized return of 6.24%, while SSFNX has yielded a comparatively lower 5.92% annualized return.
LTTIX
- 1D
- 0.00%
- 1M
- 0.08%
- YTD
- 2.74%
- 6M
- 2.59%
- 1Y
- 8.04%
- 3Y*
- 8.33%
- 5Y*
- 3.72%
- 10Y*
- 6.24%
SSFNX
- 1D
- -0.08%
- 1M
- 0.25%
- YTD
- 5.04%
- 6M
- 4.75%
- 1Y
- 11.61%
- 3Y*
- 9.71%
- 5Y*
- 4.38%
- 10Y*
- 5.92%
LTTIX vs. SSFNX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
LTTIX MFS Lifetime 2025 Fund | 2.74% | 9.29% | 6.73% | 10.36% | -12.36% | 8.61% | 10.61% | 17.82% | -3.97% | 13.16% |
SSFNX State Street Target Retirement Fund | 5.04% | 10.93% | 7.05% | 10.73% | -12.21% | 6.87% | 10.26% | 13.97% | -2.49% | 8.92% |
Correlation
The correlation between LTTIX and SSFNX is 0.90, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.90 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.94 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.96 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.95 |
Correlation (All Time) Calculated using the full available price history since Oct 1, 2014 | 0.94 |
The correlation between LTTIX and SSFNX has been stable across timeframes, ranging from 0.90 to 0.96 - a consistent structural relationship.
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Return for Risk
LTTIX vs. SSFNX — Risk / Return Rank
LTTIX
SSFNX
LTTIX vs. SSFNX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for MFS Lifetime 2025 Fund (LTTIX) and State Street Target Retirement Fund (SSFNX). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| LTTIX | SSFNX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.39 | ||
| Sortino ratioReturn per unit of downside risk | -0.43 | ||
| Omega ratioGain probability vs. loss probability | 1.42 | 1.51 | -0.09 |
| Calmar ratioReturn relative to maximum drawdown | 2.47 | 3.40 | -0.93 |
| Martin ratioReturn relative to average drawdown | 10.68 | 15.05 | -4.37 |
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Drawdowns
LTTIX vs. SSFNX - Drawdown Comparison
The maximum LTTIX drawdown since its inception was -19.33%, which is greater than SSFNX's maximum drawdown of -16.62%. Use the drawdown chart below to compare losses from any high point for LTTIX and SSFNX.
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Drawdown Indicators
| LTTIX | SSFNX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -19.33% | -16.62% | -2.71% |
Max Drawdown (1Y)Largest decline over 1 year | -3.64% | -3.52% | -0.12% |
Max Drawdown (3Y)Largest decline over 3 years | -5.77% | -5.40% | -0.37% |
Max Drawdown (5Y)Largest decline over 5 years | -16.92% | -16.62% | -0.30% |
Max Drawdown (10Y)Largest decline over 10 years | -19.33% | -16.62% | -2.71% |
Current DrawdownCurrent decline from peak | -0.45% | -0.50% | +0.05% |
Average DrawdownAverage peak-to-trough decline | -2.68% | -2.51% | -0.17% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.84% | 0.79% | +0.05% |
Volatility
LTTIX vs. SSFNX - Volatility Comparison
The current volatility for MFS Lifetime 2025 Fund (LTTIX) is 1.34%, while State Street Target Retirement Fund (SSFNX) has a volatility of 1.93%. This indicates that LTTIX experiences smaller price fluctuations and is considered to be less risky than SSFNX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| LTTIX | SSFNX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.34% | 1.93% | -0.59% |
Volatility (6M)Calculated over the trailing 6-month period | 3.32% | 3.90% | -0.58% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.18% | 4.71% | -0.53% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.37% | 6.62% | -0.25% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 7.24% | 6.58% | +0.66% |
LTTIX vs. SSFNX - Expense Ratio Comparison
LTTIX has a 0.00% expense ratio, which is lower than SSFNX's 0.10% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Dividends
LTTIX vs. SSFNX - Dividend Comparison
LTTIX's dividend yield for the trailing twelve months is around 11.54%, more than SSFNX's 4.63% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
LTTIX MFS Lifetime 2025 Fund | 11.54% | 8.13% | 7.07% | 3.30% | 5.88% | 7.35% | 2.83% | 3.68% | 4.32% | 3.51% | 4.03% | 1.82% |
SSFNX State Street Target Retirement Fund | 4.63% | 4.86% | 5.78% | 5.26% | 5.12% | 6.69% | 1.61% | 3.35% | 4.40% | 2.72% | 1.84% | 2.05% |
Frequently Asked Questions
With a correlation of 0.90, LTTIX and SSFNX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
SSFNX has higher volatility (1.93%) compared to LTTIX (1.34%). In terms of maximum drawdown, LTTIX dropped -19.33% vs SSFNX's -16.62%.
SSFNX currently has the higher Sharpe Ratio (2.54 vs 2.16), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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